15213890769 has 32 divisors (see below), whose sum is σ = 25974168576. Its totient is φ = 7689712320.

The previous prime is 15213890723. The next prime is 15213890807. The reversal of 15213890769 is 96709831251.

It is not a de Polignac number, because 15213890769 - 2³¹ = 13066407121 is a prime.

It is a super-2 number, since 2×15213890769² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15213890719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 881467 + ... + 898560.

It is an arithmetic number, because the mean of its divisors is an integer number (811692768).

Almost surely, 2^15213890769 is an apocalyptic number.

It is an amenable number.

15213890769 is a deficient number, since it is larger than the sum of its proper divisors (10760277807).

15213890769 is a wasteful number, since it uses less digits than its factorization.

15213890769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780085.

The product of its (nonzero) digits is 816480, while the sum is 51.

The spelling of 15213890769 in words is "fifteen billion, two hundred thirteen million, eight hundred ninety thousand, seven hundred sixty-nine".